Display compensation method, apparatus, and device, medium, and display apparatus

By determining and applying compensation coefficients based on brightness trends, the method enhances display uniformity by preventing cancellation of Demura and uniformity compensation effects, significantly improving the uniformity of display panels.

US20250104593A1Active Publication Date: 2025-03-27KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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Patent Information

Application Number
US18/969685
Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Priority Date
2022-06-28
Filing Date
2024-12-05
Publication Date
2025-03-27
Estimated Expiration
2042-09-28

AI Technical Summary

Technical Problem

The complexity of display panel manufacturing leads to poor uniformity due to differences in optical properties, with existing Demura and uniformity compensation methods often canceling each other out, failing to significantly improve display uniformity.

Method used

A method that determines target grayscales with consistent and inconsistent brightness trends, calculating Demura and uniformity compensation coefficients, and applying them only within specific intervals to prevent cancellation, ensuring effective compensation.

Benefits of technology

This approach improves display uniformity by 21.4% or more, enhancing the percentage of display panels meeting uniformity standards and maintaining higher average, minimum, and maximum uniformity values compared to simultaneous Demura and uniformity compensation.

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Abstract

A display compensation method, including: acquiring brightness parameters of two or more target grayscales of a display panel, and determining, based on the brightness parameters, target grayscales with consistent brightness trends and target grayscales with inconsistent brightness trends; determining a brightness trend consistency interval of grayscales according to the target grayscales with consistent brightness trends and the target grayscales with inconsistent brightness trends; calculating, for target grayscales in all grayscales of the display panel, a Demura compensation coefficient by using a Demura compensation algorithm; calculating, for target grayscales of the display panel that are within the brightness trend consistency interval, a uniformity compensation coefficient by using a uniformity compensation algorithm; writing the Demura compensation coefficient and the uniformity compensation coefficient into a driving integrated circuit (IC), to cause the driving IC to perform compensation according to the Demura compensation coefficient and the uniformity compensation coefficient.
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